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wanghao453@huawei.com

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Signed-off-by: wanghao-free <wanghao453@huawei.com>
This commit is contained in:
wanghao-free
2021-09-01 18:53:04 -07:00
parent 2a307e190c
commit 4e1dd7d7b4
3 changed files with 233 additions and 8 deletions
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8
kernel/include/los_config.h
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@@ -502,6 +502,14 @@ extern UINT8 *m_aucSysMem0;
#define OS_SYS_NOCACHEMEM_ADDR (&g_sysNoCacheMem0[0])
#endif
/**
* @ingroup los_config
* Configuration of multiple non-continuous memory regions as one memory pool
*/
#ifndef LOSCFG_MEM_MUL_REGIONS
#define LOSCFG_MEM_MUL_REGIONS 0
#endif
/* =============================================================================
Exception module configuration
============================================================================= */

41
kernel/include/los_memory.h
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@@ -120,6 +120,47 @@ extern UINT32 LOS_MemDeInit(VOID *pool);
extern UINT32 LOS_MemPoolList(VOID);
#endif
#if (LOSCFG_MEM_MUL_REGIONS == 1)
typedef struct {
VOID *startAddress;
UINT32 length;
} LosMemRegion;
/**
* @ingroup los_memory
* @brief Initialize multiple non-continuous memory regions.
*
* @par Description:
* <ul>
* <li>This API is used to initialize multiple non-continuous memory regions. If the starting address of a pool is specified,
* the memory regions will be linked to the pool as free nodes. Otherwise, the first memory region will be initialized as a
* new pool, and the rest regions will be linked as free nodes to the new pool.</li>
* </ul>
*
* @attention
* <ul>
* <li>If the starting address of a memory pool is specified, the start address of the non-continuous memory regions should be
* greater than the end address of the memory pool.</li>
* <li>The multiple non-continuous memory regions shouldn't conflict with each other.</li>
* </ul>
*
* @param pool [IN] The memory pool address. If NULL is specified, the start address of first memory region will be
* initialized as the memory pool address. If not NULL, it should be a valid address of a memory pool.
* @param memRegions [IN] The LosMemRegion array that contains multiple non-continuous memory regions. The start address
* of the memory regions are placed in ascending order.
* @param memRegionCount [IN] The count of non-continuous memory regions, and it should be the length of the LosMemRegion array.
*
* @retval #LOS_NOK The multiple non-continuous memory regions fails to be initialized.
* @retval #LOS_OK The multiple non-continuous memory regions is initialized successfully.
* @par Dependency:
* <ul>
* <li>los_memory.h: the header file that contains the API declaration.</li>
* </ul>
* @see None.
*/
extern UINT32 LOS_MemRegionsAdd(VOID *pool, const LosMemRegion * const memRegions, UINT32 memRegionCount);
#endif
/**
* @ingroup los_memory
* Memory pool extern information structure